Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add tercumantanumut/selene --skill sentrygit clone --depth 1 https://github.com/tercumantanumut/seleneWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/tercumantanumut/selene/sentry)<a href="https://agentmods.dev/skills/tercumantanumut/selene/sentry"><img src="https://agentmods.dev/badge/skills/tercumantanumut/selene/sentry/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/tercumantanumut/selene/sentry"><img src="https://agentmods.dev/badge/skills/tercumantanumut/selene/sentry.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00050 | $0.00991 |
| Opus 5.5 | $0.00020 | $0.00396 |
| Sonnet 5.5 | $0.00010 | $0.00198 |
| Haiku 4.5 | $0.00005 | $0.00099 |
Grade A, and why
sentry scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
92% identical to sentry — 6 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Sentry (Read-only Observability)
Quick start
- If not already authenticated, ask the user to provide a valid
SENTRY_AUTH_TOKEN(read-only scopes such asproject:read,event:read) or to log in and create one before running commands. - Set
SENTRY_AUTH_TOKENas an env var. - Optional defaults:
SENTRY_ORG,SENTRY_PROJECT,SENTRY_BASE_URL. - Defaults: org/project
{your-org}/{your-project}, time range24h, environmentprod, limit 20 (max 50). - Always call the Sentry API (no heuristics, no caching).
If the token is missing, give the user these steps:
- Create a Sentry auth token: https://sentry.io/settings/account/api/auth-tokens/
- Create a token with read-only scopes such as
project:read,event:read, andorg:read. - Set
SENTRY_AUTH_TOKENas an environment variable in their system. - Offer to guide them through setting the environment variable for their OS/shell if needed.
- Never ask the user to paste the full token in chat. Ask them to set it locally and confirm when ready.
Core tasks (use bundled script)
Use ${SELENE_SKILL_ROOT}/scripts/sentry_api.py for deterministic API calls. It handles pagination and retries once on transient errors.
Skill path (set once)
export SENTRY_API="${SELENE_SKILL_ROOT}/scripts/sentry_api.py"
1) List issues (ordered by most recent)
python3 "$SENTRY_API" \
list-issues \
--org {your-org} \
--project {your-project} \
--environment prod \
--time-range 24h \
--limit 20 \
--query "is:unresolved"
2) Resolve an issue short ID to issue ID
python3 "$SENTRY_API" \
list-issues \
--org {your-org} \
--project {your-project} \
--query "ABC-123" \
--limit 1
Use the returned id for issue detail or events.
3) Issue detail
python3 "$SENTRY_API" \
issue-detail \
1234567890
4) Issue events
python3 "$SENTRY_API" \
issue-events \
1234567890 \
--limit 20
5) Event detail (no stack traces by default)
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 122 lines · 50 tokens per session scan A 6eb2226c6caf
sentry is a skill published in the GitHub repository tercumantanumut/selene (172 stars, last pushed 2d ago), licensed MIT. It adds 50 tokens to every session and 991 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 92% identical to sentry, differing in 6 lines, and is treated as a copy.
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